Sealy Posturepedic Elevate Ultra Performance Gel Mattress
Mattress
Sealy Posturepedic Elevate Ultra Performance Gel Mattress
Size
Firmness
Medium Soft
Depth (cm)
33
Layers
6
Layer Details
- Quilted cover with ProShield® and SmarTex® treatment. A quilted cover treated with ProShield to repel allergens, which is helpful if dust mites or allergies disturb your sleep. The SmarTex treatment wicks away moisture and helps regulate temperature through the night.
- MemorySense® ComfortCore™. A memory foam layer that cradles to your unique shape, which means the mattress moulds around your body contours rather than pushing back against them. The result is a cushioned, calming feel as you settle in.
- Geltex. A supremely breathable foam with an open-cell structure, which means heat can escape rather than building up around you. It also provides a soft bounce back, so you won't feel stuck in the mattress.
- Cooling mesh. A mesh layer that reduces irritation from moisture build up. It works alongside the breathable foam above to keep the sleep surface fresher.
- Interior base plank. A plank within the base that provides additional support while still allowing air to flow through the mattress. This gives the softer comfort layers a stable foundation.
- AlignSupport® Coil Springs. Sealy's Posturepedic coil spring system senses and responds to your body weight, which means your spine is kept aligned whatever position you sleep in. The springs are twice tempered, so they hold their responsive nature over time.
Layer details from mattressonline.co.uk product page, September 2026.
- Distance from a restless partner: With 90cm each, a partner who turns all night is simply further away, and the cushioned MemorySense foam softens what movement does travel across.
- Space when the family piles in: A child who wanders in at 3am, or a dog who treats the bed as routine, fits without pushing either adult to the edge.
- Cooling that matters at scale: The breathable Geltex layer and cooling mesh help heat escape, useful when three warm bodies share one surface.
- Fills a larger master properly: In a big period bedroom or a generous new build master, a UK king can look undersized; the 6ft width of the UK super king sits in proportion.
- Soft comfort with support underneath: The AlignSupport springs respond to each sleeper's weight independently, so a lighter and heavier partner both get spinal alignment across all that width.
This size suits you if...
You share the bed every night and want enough width that neither of you notices the other move, or children and pets join you often enough that a UK king feels crowded. It also makes sense if your master bedroom is large enough that a smaller bed would look lost, and you're happy budgeting for super king bedding and a wider duvet.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest as a minimum, or you'd rather spend less on bedding and the mattress itself. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs at least 2.7m x 2.9m.
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What room size do I need for a super king Sealy Elevate?
We suggest at least 3m x 2.9m, and around 3.5m x 3.2m feels more comfortable, leaving space to walk around both sides and open wardrobe doors. This is our own guidance rather than Sealy's. Measure door swing and any furniture positions before committing, because a 180cm wide bed dominates a modest room.
Is the Sealy Elevate Ultra Performance Gel super king good for couples?
Yes, and it's the strongest reason to pick this size. Each of you gets 90cm of width, so a restless partner is far enough away that their turning barely registers, and the memory foam layer dampens motion further. The medium soft feel suits couples who both like a cushioned, contouring surface.
Will a super king mattress fit up my stairs?
It's the size most likely to cause trouble. At 180 x 200cm and 33cm deep, this is a large, heavy mattress, and tight landings or sharp turns can be a genuine obstacle. Measure your stairway, landing and door openings before ordering, and check the retailer's delivery access requirements on this page.
How much bigger is the UK super king than the UK king in this mattress?
The UK super king is 30cm wider than the UK king, and the two are the same length at 200cm. That extra width is what makes room for a child or pet without squeezing the adults. The trade-off is a bigger room requirement: we suggest at least 3m x 2.9m against 2.7m x 2.9m for the UK king.
What bedding does this super king mattress need?
Super king fitted sheets, and specifically deep or extra deep ones: at 33cm this mattress is taller than standard sheets allow for, and a shallow sheet will ping off the corners. A 260 x 220cm duvet suits the 180cm width. Bedding at this size costs more than king equivalents, so factor that into the budget.